Software release

• Junos OS Release 6.1 and later

Description

• Four E3 ports
• Power requirement: 0.47 A @ 48 V (22.5 W)
• Integrated DSU interoperability

Hardware features

• High-density E3 (34.368-Mbps) connectivity
• High-performance throughput on each port at speeds up to 34.368 Mbps, full duplex
• Scrambling support
• Subrate clocking support
• Rate policing on input
• Rate shaping on output
• Packet buffering, Layer 2 parsing
• Large MTUs, up to 9192 bytes
• Local and remote loopback

Software features

• Supports G-751 framing
• E3 diagnostics and loopback control
• E3 alarm and event counting and detection
• DS3 diagnostics and loopback control
• Bit error rate test (BERT); you can configure one port in BERT mode and configure the remaining channels to transmit and receive normal traffic
• Encapsulations:
  • High-level Data Link Control (HDLC)
  • Frame Relay
  • Multiprotocol Label Switching (MPLS) circuit cross-connect (CCC)
  • Point-to-Point Protocol (PPP)

Cables and connectors

• Custom 10 ft (3.05 m) posilock to BNC male cable, separate RX and TX

LEDs

One tricolor per port:

• Off—Not enabled
• Green—Online with no alarms or failures
• Yellow—Online with alarms for remote failures
• Red—Active with a local alarm; router has detected a failure

Alarms, errors, and events

• Alarm indication signal (AIS)
• Equipment failure (does not affect service)
• Frame error
• Line code violation
• Loss of signal (LOS)
• Out of frame (OOF)
• Yellow alarm bit (A-bit) disagreements